Battery charger



FIG. 1 is a first perspective view of a battery charger showing our newdesign;

FIG. 2 is a top view thereof;

FIG. 3 is a first side elevation view thereof;

FIG. 4 is a second side elevation view thereof showing the side oppositethat shown in FIG. 3;

FIG. 5 is a front elevation view thereof; and,

FIG. 6 is a rear elevation view thereof.

The ornamental design for a battery charger, as shown and described.